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HUMAN(1)

NAME

human - generate BRL-CAD human body models

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SYNOPSIS

human [options] [top_level_object_name]

DESCRIPTION

human creates a BRL-CAD database, human.g, containing one or more articulated human body models built from primitive shapes representing the head, neck, torso, arms, and legs. By default it writes a single model standing at the origin with a height of 68 inches (5 feet 8 inches) under the top-level combination Body.c. The model height, stance, body dimensions, and the number of models (arranged in a square grid) can all be controlled from the options below or supplied interactively.

The last argument on the command line, if present, is used as the top-level object name in place of the default Body.c. When more than one model is generated (see -N), this name is instead used as a prefix for the individual models, which are grouped under a top-level combination named Crowd.c. The resulting geometry can be viewed and edited with mged(1) or rendered with rt(1).

OPTIONS

-A

AutoMake defaults; generate a standard 50th-percentile human model.

-m

Manual sizing mode; prompt interactively for the dimensions of every body part, in inches.

-H #

Set the overall height of the model, in inches. Values below 1 are rejected and the default height of 68 inches is used instead.

-L, -l

Prompt interactively for the X, Y, and Z coordinates (in inches) of the model’s center point, measured at the feet. The default location is the origin.

-b

Generate bounding boxes for each body part of the model.

-n name

Set the bounding region (top-level object) name. The default is Body.c. A name given as the final positional argument overrides this.

-N #

Set the number of models to generate. The value is squared, producing an N by N grid of human models. Values of 1 or less default to a 4x4 (16-model) formation. In this multi-model mode the individual models are named using the top-level name as a prefix (e.g. Body.c0, Body.c1, …​) and are all gathered under a top-level combination named Crowd.c.

-s #

Set the model’s stance. Supported values are:
0 - Stand
1 - Sit
2 - Drive
3 - Arms out
4 - Letterman
5 - Captain
999 - Custom (prompts interactively for limb angles)

-p #

Set the percentile of the model, clamped to the range 1-99. This option is parsed but not yet implemented and currently has no effect on the generated dimensions.

-t

Write bounding-box dimensions (height, width, depth) of the model to a file named stats.txt.

-T

Read bounding-box dimensions from a file named stats.txt to override the computed values.

-v

Write a verbose record of every measurement and setting used to build the model to a file named verbose.txt.

-V

Read all model dimensions from a file named verbose.txt.

-h, -?

Print a usage message and exit.

In addition, human accepts a set of single-character "wizard" options (the digits 0-9 and the symbols = + _ * ^ % $ # @ ! ~ Q Z Y W), each taking a numeric argument that sets one individual body measurement in inches. These are intended for use by automated front ends and are not meant to be supplied directly.

EXAMPLES

Example 1. Generate a default human model
human

Creates human.g containing a single 68-inch standing human model under the top-level combination Body.c.

Example 2. Build a squad and render it
human -N 4 squad.c
rt -o squad.png human.g Crowd.c

Generates a 4x4 grid (16 models) of humans, each model named with the prefix squad.c (so squad.c0 through squad.c15) and all gathered under a top-level combination named Crowd.c, then renders the scene to a PNG image with rt(1). In multi-model mode the top-level grouping object is always named Crowd.c regardless of any name given on the command line.

Example 3. Create a seated model of a specific height
human -H 72 -s 1 seated.c
mged human.g 'draw seated.c; e seated.c'

Builds a 72-inch model in a seated pose named seated.c and opens it in mged(1) for inspection.

SEE ALSO

brlcad(1), mged(1), rt(1)

AUTHOR

BRL-CAD Team

This software is Copyright (c) 1989-2026 by the United States Government as represented by U.S. Army Research Laboratory.

BUG REPORTS

Reports of bugs or problems should be submitted via electronic mail to devs@brlcad.org